US20050057089A1 - Brake units - Google Patents
Brake units Download PDFInfo
- Publication number
- US20050057089A1 US20050057089A1 US10/928,144 US92814404A US2005057089A1 US 20050057089 A1 US20050057089 A1 US 20050057089A1 US 92814404 A US92814404 A US 92814404A US 2005057089 A1 US2005057089 A1 US 2005057089A1
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- US
- United States
- Prior art keywords
- actuator
- buffer pipe
- piping block
- attached
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
- B60T17/046—Devices for pipe guiding and fixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
- B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
- B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units
- B60T8/368—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders
- B60T8/3685—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units combined with other mechanical components, e.g. pump units, master cylinders characterised by the mounting of the modulator unit onto the vehicle
Definitions
- the present invention relates to brake units having an actuator for performing an anti-lock brake function, a piping block, and at least one metal pipe attached to the piping block where the piping block is adapted to be coupled to the actuator.
- This brake unit has an actuator to be coupled between a master cylinder and a wheel cylinder.
- the actuator has a reservoir to hold operating fluid discharged from the wheel cylinder, a pump for pumping the operating fluid out of the reservoir, and a motor for operating the pump.
- the actuator is attached to a vehicle body via an elastic member.
- the elastic member buffers the oscillation caused by operating the actuator so as to prevent the oscillation from being transmitted to the vehicle body.
- a plurality of pipes are attached to the actuator.
- a pipe to couple the actuator to the master cylinder and a pipe to couple the actuator to the wheel cylinder are all attached to the actuator.
- These pipes are typically metallic pipes. Therefore, when the actuator oscillates, the oscillation is transmitted to the metallic pipes and this leads to the oscillation of the metallic piping.
- the metallic pipes are attached to the vehicle body via a resin clip so as to absorb the oscillation of the metallic pipes.
- part of the oscillation may be transmitted to the vehicle body. The part of the oscillation transmitted to the vehicle body may cause a vibratory or oscillatory noise, resulting in an unpleasant sensation for passengers.
- brake units that has an actuator for an anti-lock brake function; a piping block; one or more buffer pipes made of an elastic material; and one or more metallic pipes that are attached to the piping block; wherein the piping block is coupled to the actuator via the buffer pipes.
- the actuator is connected to the metallic pipes via the buffer pipe(s) and the piping block. Accordingly, the oscillation of the actuator is buffered by the buffer pipe(s) and therefore the oscillations are prevented from being directly transmitted to the metallic pipe(s). Since the oscillation of the actuator is inhibited from being directly transmitted to the metallic pipe(s), the occurrence of the oscillation noise causing an unpleasant sensation for the passengers is also inhibited.
- the piping block is attached to the actuator via a first elastic member.
- the actuator and the metallic pipe(s) are attached to each other via the first elastic member and attachment means. Accordingly, the first elastic member buffers and isolates the oscillation of the actuator so as to inhibit the oscillations from being easily transmitted to the metallic pipe(s). Consequently, the first elastic member ultimately inhibits the occurrence of the oscillation noise that may have potentially caused an unpleasant sensation for the passengers.
- the piping block is configured so as to be attached to the body of a vehicle.
- the actuator is also attached to the vehicle body via the first elastic member and the piping block.
- the oscillations of the actuator are buffered by the first elastic member (located between the actuator and the piping block) and therefore inhibited from being directly transmitted to the vehicle body.
- the first elastic member also inhibits the transmission of the oscillation of the actuator to the metallic pipe(s).
- the first elastic member simultaneously plays a roll in inhibiting the oscillation of the actuator from being transmitted to the vehicle body and in inhibiting the oscillation of the actuator from being transmitted to the metallic pipe(s). Therefore, it is possible to effectively inhibit or isolate the oscillation of the actuator.
- the actuator and the piping block are configured so as to be separately or individually attached to the body of the vehicle.
- the actuator is attached to the body of the vehicle via a second elastic member.
- the second elastic member buffers the oscillation of the actuator. Consequently, the second elastic member inhibits the transmission of the oscillation of the actuator to the vehicle body.
- the piping block is coupled to the actuator via the buffer pipe(s). Therefore, the piping block does not experience the direct transmission of the oscillations of the actuator.
- the lack of transmission of oscillations to the piping block allows the separately attached piping block to be directly attached to the vehicle body (i.e., not via an elastic member, buffer, or the like).
- the brake units include at least one of a first retaining structure for attaching the buffer pipe(s) to the actuator and a second retaining structure for attaching the buffer pipe(s) to the piping block.
- the retaining structure prevents the buffer pipe(s) from being inadvertently removed or separated from the actuator or the piping block in the situations before, during, and after the fluid pressure within the buffer pipe(s) exert an internal force upon the buffer pipe(s) (potentially resulting in a physical expansion of the buffer pipe(s)).
- the retaining structure when a high fluid pressure physically expands the buffer pipe(s), the retaining structure more securely prevents the buffer pipe(s) from inadvertent removal or separation as compared to the conditions prior to the point when the fluid pressure expands the buffer pipe(s) (i.e., when a lower fluid pressure exists within the buffer pipe(s)).
- the buffer pipe(s) can be stably attached to the actuator and/or the piping block by the retaining structures.
- the buffer pipe(s) is made of an elastic material, fluid pressure within the buffer pipe(s) may expand the buffer pipe(s).
- the retaining structure stably engages the buffer pipe(s).
- the retaining structure has an attaching part that is disposed at a first end portion and/or a second end portion of a buffer pipe(s) and a support part that is disposed at the actuator and/or the piping block.
- the attaching part has a tapered portion including a tapered surface broadening in circumference towards an end portion of the buffer pipe.
- the support part is configured so that the attaching part is inserted therein.
- the support part is also provided with a corresponding tapered portion including a tapered surface so as to securely engage the attaching part.
- the tapered portions prevent the attaching part from inadvertent removal or separation from the support part due at least in part to the contact between the corresponding tapered portions along the tapered surfaces.
- the retaining structures include the attaching parts of the buffer pipe(s) and the support parts of the actuator and/or the piping block, and both parts have tapered portions. Accordingly, the attaching part and the support part may restrict the movement of the buffer pipe in a removal or separation direction by using the cone angles of the taper portions.
- the attaching part Since the attaching part is inserted into the support part, the attaching part is expanded towards the encircling support part when the fluid pressure (hydraulic pressure) within the buffer pipe exerts an outward force on the buffer pipe.
- the fluid pressure results in the tapered portion of an attaching part and the tapered portion of a support part closely contacting with one another so as to more strongly and more securely restrict the movement of the buffer pipe in the direction of removal.
- the retaining structure may more strongly prevent the removal of the buffer pipe(s) than before the expansion of the buffer pipe(s) (i.e. at a lower fluid pressure).
- the brake units have a plurality of metallic pipes.
- Each metallic pipe is coupled to the actuator (through the piping block) via a corresponding buffer pipe.
- the piping block may be formed as a single member connected to a plurality of metallic pipes.
- the piping block may also be configured as having a corresponding plurality of block members that are respectively connected to a plurality of metallic pipes, and a plate part to connect the plurality of block members to each other.
- FIG. 1 is a perspective view of a first embodiment of a brake unit
- FIG. 2 is an enlarged cross-sectional view of the brake unit of FIG. 1 taken from line II-II;
- FIG. 3 is a cross-sectional view of an attaching structure of FIG. 1 taken from line III-III;
- FIG. 4 is a perspective view of a second embodiment of a brake unit.
- FIG. 5 is an enlarged cross-sectional view of the brake unit of FIG. 4 taken from line V-V.
- a brake unit 1 is a unit for an anti-lock brake system and it serves to prevent a wheel(s) from locking up (i.e., stop rotating while the vehicle is still moving) upon braking.
- the brake unit 1 has an actuator 2 , a piping block 4 attached to the actuator 2 , and a plurality of metallic pipes 3 (for example, six as shown in FIG. 1 ) attached to the piping block 4 .
- Some of the plurality of metallic pipes 3 are adapted to connect the actuator 2 to wheel cylinders (not illustrated) and other metallic pipes 3 are adapted to connect the actuator 2 to a master cylinder.
- the actuator 2 has a housing 20 and a plurality of electromagnetic valves (not illustrated) attached to the housing 20 .
- a reservoir and a pump (not illustrated) are provided in the housing 20 .
- a motor 22 for operating the pump is attached to the housing 20 .
- a controller sending a signal based upon the revolving speed of a wheel(s) controls the electromagnetic valves or the like to open and close a fluid path disposed within the actuator 2 .
- electromagnetic valves are provided between the wheel cylinders and the reservoir within housing 20 , and when the electromagnetic valves are opened, the operating fluid in the brake circuit corresponding to the wheel cylinder is discharged to the reservoir in order to reduce the hydraulic pressure upon the wheel cylinder.
- the operating fluid discharged from the wheel cylinders is held in the reservoir within the housing 20 .
- the pump may transfer the operating fluid from the reservoir to the side of the master cylinder via the plurality of metallic pipes 3 .
- the piping block 4 is configured in the form of a thick plate near the upper surface of the housing 20 .
- the metallic pipes 3 are attached to the upper surface side of the piping block 4 .
- the piping block 4 has a plurality of attachment through holes 40 in which attaching members 41 are inserted and a separate plurality of piping through holes 43 to which a corresponding plurality of metallic pipes 3 are attached.
- a first elastic member 5 in the form of a tube is inserted into each of the attachment through holes 40 .
- a tubular collar 42 is inserted into the first elastic member 5 and then an attaching member 41 (a bolt in the illustrated example) is inserted into the collar 42 .
- first elastic member 5 An elastic material may be molded into the form of first elastic member 5 (for example, materials such as a rubber material and an elastically deformable resin material).
- first elastic member 5 has a concave portion 50 located around the middle of the circumferential external surface.
- first elastic member 5 has a locking part 51 located at one axial end above (as seen in FIG. 2 ) the concave portion 50 of the substantially tube shaped member, and a locking part 52 located at the other axial end, below the concave portion 50 .
- the diameters of locking parts 51 and 52 are larger than the diameter of the attachment through hole 40 .
- the first elastic member 5 is inserted into the attachment through hole 40 in such a way so as to respectively lock the upper end surface and the lower end surface of the piping block 4 with locking part 51 and locking part 52 . In this way, the first elastic member 5 is attached to the piping block 4 .
- the collar 42 is longer than the first elastic member 5 .
- Each attaching member 41 attaches the collar 42 to the housing 20 . Accordingly, both the collar 42 and the attaching member 41 are integrally attached to the housing 20 .
- the piping block 4 is attached to the housing 20 (at the actuator 2 ) via the first elastic members 5 .
- each of the piping through holes 43 has a female screw thread 43 a on the inner surface of their upper portions.
- An attaching part 30 is attached to the female screw thread 43 a.
- each metallic pipe 3 is attached to the piping block 4 via the attaching member 30 .
- a buffer pipe 6 is arranged at the lower side of each of the piping through holes 43 .
- the buffer pipe 6 is attached between the piping block 4 and the housing 20 .
- the buffer pipe 6 is manufactured by molding an elastic material (for example, an elastic material such as a rubber material and an elastically deformable resin material) into substantially the form of a tube.
- the buffer pipe 6 is attached to the housing 20 by a retaining structure 62 , and the buffer pipe 6 is attached to the piping block 4 by a retaining structure 63 . Therefore, a gap between the piping block 4 and the housing 20 is sealed.
- the fluid paths 20 a that are disposed in the housing 20 are connected to the piping through holes 43 formed in the piping block 4 via the buffer pipes 6 .
- the retaining structure 62 includes a lower attaching part 60 that is provided at the lower axial end of the buffer pipe 6 and a housing support part 20 b that is provided in the housing 20 .
- the retaining structure 63 includes an upper attaching part 61 that is provided at the upper axial end of the buffer pipe 6 and a block support part 44 that is provided in the piping block 4 .
- At least a part of the attaching part 60 and at least a part of the attaching part 61 have tapered portions respectively broadening in circumference towards the lower and upper axial ends of the buffer pipe 6 and creating tapered surfaces.
- each of the support parts 20 b and 44 is configured in the form of a groove. At least a part of the support part 20 b and at least a part of the support part 44 have tapered portions respectively broadening in circumference towards the back of the grooves (in a direction towards the interior of the housing or piping block respectively) conforming to the forms of the attaching parts 60 and 61 and also creating tapered surfaces.
- the tapered portions of the attaching parts 60 and 61 and the tapered portions of the support parts 20 b and 44 may contact at their faces (i.e., tapered surfaces) when the attaching parts 60 and 61 are inserted into the support parts 20 b and 44 .
- the retaining structures have the attaching parts 60 and 61 at the axial ends of the buffer pipe 6 and the support parts 20 b and 44 on the inside of the actuator 2 and the piping block 4 , and both combinations of attaching parts and the support parts have corresponding tapered portions and tapered surfaces. Accordingly, the attaching parts 60 and 61 and the support parts 20 b and 44 may restrain the movement of the buffer pipe 6 in a removal direction by utilizing the cone angles of the tapered portions.
- the buffer pipe 6 is made of an elastic material as described above. Therefore, the buffer pipe 6 may be expanded in a circumferential direction when the fluid pressure (hydraulic pressure) in the buffer pipe 6 becomes high. When the buffer pipe 6 expands, the buffer pipe 6 may more tightly and more closely contact the engaging surfaces (tapered surfaces, etc.) of the support parts 20 b and 44 as compared to conditions prior to the expansion (i.e., when the fluid pressure was lower). The expansion of the external surfaces of the attaching parts 60 and 61 results in the retaining structures more securely inhibiting the movement of the buffer pipe 6 in a removing direction.
- the retaining structures may prevent the buffer pipe 6 from being inadvertently removed from the actuator 2 or the piping block 4 .
- the retaining structure may more strongly prevent the inadvertent removal of the buffer pipe 6 as compared to a lower fluid pressure situation before expansion.
- the actuator 2 and the piping block 4 are able to stably retain the buffer pipe 6 due to the retaining structure.
- the buffer pipes 6 may be molded from an elastic material, the buffer pipes 6 are likely to be expanded by the fluid pressure, thereby increasing the ability of the retaining structure to stably retain the buffer pipes 6 .
- the housing 20 is provided with attaching structures 7 (only one attaching structure is shown in FIG. 3 ) to be attached to a vehicle body 10 , such as the frame or body structure of an automobile for example.
- the attaching structures 7 may attach the actuator 2 to the vehicle body 10 .
- Each attaching structure 7 has a bracket 70 , a first attaching structure 7 a, and a second attaching structure 7 b.
- the first attaching structure 7 a has a second elastic member 71 and attaches the housing 20 to the bracket 70 via a second elastic member 71 .
- the second attaching structure 7 b has an attaching member 72 and attaches the bracket 70 to the vehicle body 10 . Accordingly, the actuator 2 is attached to the vehicle body 10 via the second elastic member 71 .
- the brake unit 1 is configured as described above.
- the actuator 2 is coupled to the metallic pipes 3 via the piping block 4 and the buffer pipes 6 .
- the oscillation of the actuator 2 is buffered by the buffer pipes 6 and the oscillation is prevented from being directly transmitted to the metallic pipes 3 .
- the actuator 2 is coupled to the metallic pipes 3 via the piping block 4 and the first elastic members 5 . Consequently, the first elastic members 5 buffer the oscillation of the actuator 2 and the oscillations are prevented from being directly transmitted to the metallic pipes 3 . Thus, the subsequent occurrence of the unpleasant sensation felt by the passengers due to the noise generated by the oscillations of the metallic pipes 3 is also inhibited.
- the metallic pipes 3 are inhibited from oscillating due to the isolation effects of the buffer pipes 6 and the first elastic members 5 , the usable life of the metallic pipes 3 are extended.
- the metallic pipes 3 are attached to the vehicle body 10 via resin clips in order to absorb transmitted oscillations.
- the oscillations of the metallic pipes 3 are inhibited, it is possible to simplify the structure of the clips and/or decrease the total number of clips used.
- a brake unit 1 A according to the second embodiment is approximately identical to the first embodiment with an exception that a piping block 8 and a plate part 80 shown in FIG. 4 are provided in place of the piping block 4 shown in FIG. 1 .
- the primary differences between the first embodiment and the second embodiment will be described below.
- identical reference numerals are given to the elements that are similar or identical to the elements described in the first embodiment.
- the brake unit 1 A has a plurality of piping blocks 8 equal to the number of metallic pipes 3 .
- Each metallic pipe 3 is attached to a respective piping block 8 .
- the piping blocks 8 are welded to the plate part 80 so as to be integrally attached to the plate part 80 .
- the plate part 80 is formed from a metallic plate and integrally includes an upper surface portion 80 a and a side surface portion 80 b.
- the plate part 80 extends along a portion of the external surface of the housing 20 .
- the upper surface portion 80 a extends along the upper surface of the housing 20 and the side surface portion 80 b extends along a side surface of the housing 20 .
- a plurality of through holes 80 c are formed in the upper surface portion 80 a and the side surface portion 80 b.
- Tubular first elastic members 53 and collars 42 are inserted through each through hole 80 c.
- Attaching members 41 are inserted at the center of each collar 42 . Then, one end of each attaching member 41 is attached to the housing 20 , so that each collar 42 and each first elastic member 53 are attached to the housing 20 via the attaching members 41 .
- the first elastic member 53 may be made of an elastic material (such as a rubber material and an elastically deformable resin material).
- each first elastic member 53 has a concave portion 53 a located near the middle of its external circumferential surface.
- the first elastic member 53 has a locking part 53 b located above the concave portion 53 a and has a locking part 53 c located below the concave portion 53 a.
- These locking parts 53 b and locking parts 53 c have diameters that are larger than a diameter of the through hole 80 c.
- each piping block 8 has a through hole 83 .
- the through hole 83 has a female screw thread 83 a on the inner surface of its upper portion.
- the attaching part 30 is attached to the female screw thread 83 a, and via the attaching member 30 , the metallic pipe 3 is attached to the piping block 8 .
- each buffer pipe 6 is arranged and attached between the piping block 8 and the housing 20 .
- Each buffer pipe 6 is manufactured by molding an elastic material (such as a rubber material and an elastically deformable resin material) into the form of a tube as in the first embodiment.
- the buffer pipes 6 couple the through holes 83 to the fluid paths 20 a of the housing 20 .
- the buffer pipes 6 are attached to the housing 20 by a retaining structure 62 and the buffer pipes 6 are attached to the piping block 8 by a retaining structure 63 .
- a bracket 81 is secured to the plate part 80 (located in this embodiment along the side surface portion 80 b for example).
- the bracket 81 is formed from a metallic plate that extends from the side surface portion 80 b toward the vehicle body 10 . As shown in FIG. 5 , the bracket 81 is provided with a through hole penetrating in a direction of thickness and an attaching member 82 (for example, a bolt) is inserted into the through hole. The bracket 81 is then attached to the vehicle body 10 via the attaching member 82 .
- an attaching member 82 for example, a bolt
- the brake unit 1 A is configured as described above. Therefore, as shown in FIG. 5 , by attaching the piping blocks 8 to the vehicle body 10 , the actuator 2 is attached to the vehicle body 10 via the piping blocks 8 , the plate part 80 , and the first elastic members 53 .
- the elastic members 53 buffer the oscillation of the actuator 2 , so that the oscillations of the actuator 2 are inhibited from being transmitted to the vehicle body 10 by the first elastic members 53 .
- the first elastic members 53 may also inhibit the oscillation of the actuator 2 from being transmitted to the metallic pipes 3 . Accordingly, the first elastic members 53 may simultaneously play a roll in inhibiting the oscillation of the actuator 2 from being transmitted to the vehicle body 10 and in inhibiting the oscillation of the actuator 2 from being transmitted to the metallic pipes 3 . Thus, according to the present embodiment, it is possible to effectively isolate the oscillations of the actuator 2 .
- the present invention is not limited to the first and second embodiments; the following embodiments may be established.
- the attaching members 41 connect the actuator 2 to the piping block 4 .
- the actuator 2 is then attached to the vehicle body.
- the actuator 2 is not connected to the piping block 4 with attaching members 41 , and both the actuator 2 and the piping block 4 are separately (and possibly independently) attached to the vehicle body.
- the actuator 2 is attached to the vehicle body via second elastic members, so that the second elastic members buffer the oscillation of the actuator 2 . In this way, the oscillation is isolated so as to be prevented from being transmitted to the vehicle body.
- the piping block 4 is coupled to the actuator 2 via the buffer pipes 6 in the same manner as in the first embodiment. Therefore, the piping block 4 does not suffer from the oscillations of the actuator 2 .
- the piping block 4 does not transmit the oscillations of the actuator 2 even when the piping block 4 is directly attached to the vehicle body without intervening second elastic members or the like.
- the actuator 2 and the piping block 4 are integrated by attachment means and the actuator 2 is attached to the vehicle body.
- the piping block 4 is attached to the vehicle body instead of the actuator 2 .
- the first elastic member 5 may inhibit the oscillation of the actuator 2 from being transmitted to the vehicle body and further, may inhibit the oscillation of the actuator 2 from being transmitted to the metallic pipes 3 .
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Regulating Braking Force (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
A brake unit has an actuator for an anti-locking brake function, a piping block, buffer pipes made of an elastic material, and metallic pipes that are attached to the piping block. The piping block is coupled to the actuator via the buffer pipes. The piping block may be attached to the actuator via elastic members. The buffer pipes and elastic members help to isolate and prevent the transmission of the oscillations of the actuator. As a result, the buffer pipes and elastic members inhibit the generation of oscillation-induced unpleasant noise felt by the passengers of the vehicle.
Description
- This application claims priority to Japanese patent application serial number 2003-323181, the contents of which are incorporated herein by reference.
- 1. Field of the Invention
- The present invention relates to brake units having an actuator for performing an anti-lock brake function, a piping block, and at least one metal pipe attached to the piping block where the piping block is adapted to be coupled to the actuator.
- 2. Description of the Related Art
- Conventionally, a brake unit described in Japanese Laid-Open Patent Publication No. 10-250549 has been known. This brake unit has an actuator to be coupled between a master cylinder and a wheel cylinder. The actuator has a reservoir to hold operating fluid discharged from the wheel cylinder, a pump for pumping the operating fluid out of the reservoir, and a motor for operating the pump. The actuator is attached to a vehicle body via an elastic member.
- Accordingly, the elastic member buffers the oscillation caused by operating the actuator so as to prevent the oscillation from being transmitted to the vehicle body.
- However, a plurality of pipes are attached to the actuator. For example, a pipe to couple the actuator to the master cylinder and a pipe to couple the actuator to the wheel cylinder are all attached to the actuator. These pipes are typically metallic pipes. Therefore, when the actuator oscillates, the oscillation is transmitted to the metallic pipes and this leads to the oscillation of the metallic piping. In order to prevent this oscillation from being transmitted to the body of the vehicle, the metallic pipes are attached to the vehicle body via a resin clip so as to absorb the oscillation of the metallic pipes. However, it may be difficult to sufficiently buffer or isolate the oscillation of the metallic pipes solely by the use of the clip. When the oscillation is not sufficiently buffered, part of the oscillation may be transmitted to the vehicle body. The part of the oscillation transmitted to the vehicle body may cause a vibratory or oscillatory noise, resulting in an unpleasant sensation for passengers.
- It is accordingly an object of the present invention to teach brake units which do not result in an unpleasant sensation felt by passengers by inhibiting the oscillations (vibrations) of an actuator from being transmitted to the metallic pipes.
- According to one aspect of the present teachings, brake units are taught that has an actuator for an anti-lock brake function; a piping block; one or more buffer pipes made of an elastic material; and one or more metallic pipes that are attached to the piping block; wherein the piping block is coupled to the actuator via the buffer pipes.
- In other words, the actuator is connected to the metallic pipes via the buffer pipe(s) and the piping block. Accordingly, the oscillation of the actuator is buffered by the buffer pipe(s) and therefore the oscillations are prevented from being directly transmitted to the metallic pipe(s). Since the oscillation of the actuator is inhibited from being directly transmitted to the metallic pipe(s), the occurrence of the oscillation noise causing an unpleasant sensation for the passengers is also inhibited.
- According to another aspect of the present invention, the piping block is attached to the actuator via a first elastic member.
- In more detail, the actuator and the metallic pipe(s) are attached to each other via the first elastic member and attachment means. Accordingly, the first elastic member buffers and isolates the oscillation of the actuator so as to inhibit the oscillations from being easily transmitted to the metallic pipe(s). Consequently, the first elastic member ultimately inhibits the occurrence of the oscillation noise that may have potentially caused an unpleasant sensation for the passengers.
- According to yet another aspect of the present invention, the piping block is configured so as to be attached to the body of a vehicle. When the piping block is attached to the body of a vehicle, the actuator is also attached to the vehicle body via the first elastic member and the piping block.
- As a result, the oscillations of the actuator are buffered by the first elastic member (located between the actuator and the piping block) and therefore inhibited from being directly transmitted to the vehicle body.
- In addition, the first elastic member also inhibits the transmission of the oscillation of the actuator to the metallic pipe(s). As a result, the first elastic member simultaneously plays a roll in inhibiting the oscillation of the actuator from being transmitted to the vehicle body and in inhibiting the oscillation of the actuator from being transmitted to the metallic pipe(s). Therefore, it is possible to effectively inhibit or isolate the oscillation of the actuator.
- According to yet another aspect of the present invention, the actuator and the piping block are configured so as to be separately or individually attached to the body of the vehicle. The actuator is attached to the body of the vehicle via a second elastic member.
- Since the actuator is attached to the body of the vehicle via the second elastic member, the second elastic member buffers the oscillation of the actuator. Consequently, the second elastic member inhibits the transmission of the oscillation of the actuator to the vehicle body.
- On the other hand, the piping block is coupled to the actuator via the buffer pipe(s). Therefore, the piping block does not experience the direct transmission of the oscillations of the actuator. The lack of transmission of oscillations to the piping block allows the separately attached piping block to be directly attached to the vehicle body (i.e., not via an elastic member, buffer, or the like).
- According to still another aspect of the present invention, the brake units include at least one of a first retaining structure for attaching the buffer pipe(s) to the actuator and a second retaining structure for attaching the buffer pipe(s) to the piping block. The retaining structure prevents the buffer pipe(s) from being inadvertently removed or separated from the actuator or the piping block in the situations before, during, and after the fluid pressure within the buffer pipe(s) exert an internal force upon the buffer pipe(s) (potentially resulting in a physical expansion of the buffer pipe(s)). Further, when a high fluid pressure physically expands the buffer pipe(s), the retaining structure more securely prevents the buffer pipe(s) from inadvertent removal or separation as compared to the conditions prior to the point when the fluid pressure expands the buffer pipe(s) (i.e., when a lower fluid pressure exists within the buffer pipe(s)).
- Accordingly, the buffer pipe(s) can be stably attached to the actuator and/or the piping block by the retaining structures. Particularly, since the buffer pipe(s) is made of an elastic material, fluid pressure within the buffer pipe(s) may expand the buffer pipe(s). However, the retaining structure stably engages the buffer pipe(s).
- According to a further aspect of the present invention, the retaining structure has an attaching part that is disposed at a first end portion and/or a second end portion of a buffer pipe(s) and a support part that is disposed at the actuator and/or the piping block. The attaching part has a tapered portion including a tapered surface broadening in circumference towards an end portion of the buffer pipe. The support part is configured so that the attaching part is inserted therein. The support part is also provided with a corresponding tapered portion including a tapered surface so as to securely engage the attaching part. The tapered portions prevent the attaching part from inadvertent removal or separation from the support part due at least in part to the contact between the corresponding tapered portions along the tapered surfaces.
- In other words, the retaining structures include the attaching parts of the buffer pipe(s) and the support parts of the actuator and/or the piping block, and both parts have tapered portions. Accordingly, the attaching part and the support part may restrict the movement of the buffer pipe in a removal or separation direction by using the cone angles of the taper portions.
- Since the attaching part is inserted into the support part, the attaching part is expanded towards the encircling support part when the fluid pressure (hydraulic pressure) within the buffer pipe exerts an outward force on the buffer pipe. The fluid pressure results in the tapered portion of an attaching part and the tapered portion of a support part closely contacting with one another so as to more strongly and more securely restrict the movement of the buffer pipe in the direction of removal.
- Thus, when the fluid pressure expands the buffer pipe(s), the retaining structure may more strongly prevent the removal of the buffer pipe(s) than before the expansion of the buffer pipe(s) (i.e. at a lower fluid pressure).
- According to a still further aspect of the present invention, the brake units have a plurality of metallic pipes. Each metallic pipe is coupled to the actuator (through the piping block) via a corresponding buffer pipe.
- The piping block may be formed as a single member connected to a plurality of metallic pipes. The piping block may also be configured as having a corresponding plurality of block members that are respectively connected to a plurality of metallic pipes, and a plate part to connect the plurality of block members to each other.
-
FIG. 1 is a perspective view of a first embodiment of a brake unit; -
FIG. 2 is an enlarged cross-sectional view of the brake unit ofFIG. 1 taken from line II-II; -
FIG. 3 is a cross-sectional view of an attaching structure ofFIG. 1 taken from line III-III; -
FIG. 4 is a perspective view of a second embodiment of a brake unit; and -
FIG. 5 is an enlarged cross-sectional view of the brake unit ofFIG. 4 taken from line V-V. - Each of the additional features and teachings disclosed above and below may be utilized separately or in conjunction with other features and teachings to provide improved brake unit and methods of using such improved brake units. Representative examples of the present invention, which examples utilize many of these additional features and teachings both separately and in conjunction with one another, will now be described in detail with reference to the attached drawings. This detailed description is merely intended to teach a person of skill in the art further details for practicing preferred aspects of the present teachings and is not intended to limit the scope of the invention. Only the claims define the scope of the claimed invention. Therefore, combinations of features and steps disclosed in the following detailed description may not be necessary to practice the invention in the broadest sense, and are instead taught merely to particularly describe representative examples of the invention. Moreover, various features of the representative examples and the dependent claims may be combined in ways that are not specifically enumerated in order to provide additional useful embodiments of the present teachings.
- With reference to FIGS. 1 to 3, a first embodiment of the present invention will be described below.
- A
brake unit 1 according to the first embodiment is a unit for an anti-lock brake system and it serves to prevent a wheel(s) from locking up (i.e., stop rotating while the vehicle is still moving) upon braking. - As shown in
FIG. 1 , thebrake unit 1 has anactuator 2, apiping block 4 attached to theactuator 2, and a plurality of metallic pipes 3 (for example, six as shown inFIG. 1 ) attached to thepiping block 4. Some of the plurality of metallic pipes 3 (four for example in this embodiment) are adapted to connect theactuator 2 to wheel cylinders (not illustrated) and othermetallic pipes 3 are adapted to connect theactuator 2 to a master cylinder. - As shown in
FIG. 1 , theactuator 2 has ahousing 20 and a plurality of electromagnetic valves (not illustrated) attached to thehousing 20. In thehousing 20 a reservoir and a pump (not illustrated) are provided. Amotor 22 for operating the pump is attached to thehousing 20. - A controller sending a signal based upon the revolving speed of a wheel(s) controls the electromagnetic valves or the like to open and close a fluid path disposed within the
actuator 2. For example, electromagnetic valves are provided between the wheel cylinders and the reservoir withinhousing 20, and when the electromagnetic valves are opened, the operating fluid in the brake circuit corresponding to the wheel cylinder is discharged to the reservoir in order to reduce the hydraulic pressure upon the wheel cylinder. - The operating fluid discharged from the wheel cylinders is held in the reservoir within the
housing 20. After discharge into the reservoir, the pump may transfer the operating fluid from the reservoir to the side of the master cylinder via the plurality ofmetallic pipes 3. - As shown in
FIG. 1 , thepiping block 4 is configured in the form of a thick plate near the upper surface of thehousing 20. Themetallic pipes 3 are attached to the upper surface side of thepiping block 4. - As shown in
FIG. 2 , thepiping block 4 has a plurality of attachment throughholes 40 in which attachingmembers 41 are inserted and a separate plurality of piping throughholes 43 to which a corresponding plurality ofmetallic pipes 3 are attached. - A first
elastic member 5 in the form of a tube is inserted into each of the attachment through holes 40. Atubular collar 42 is inserted into the firstelastic member 5 and then an attaching member 41 (a bolt in the illustrated example) is inserted into thecollar 42. - An elastic material may be molded into the form of first elastic member 5 (for example, materials such as a rubber material and an elastically deformable resin material). As shown in
FIG. 2 , the firstelastic member 5 has aconcave portion 50 located around the middle of the circumferential external surface. In addition, the firstelastic member 5 has a lockingpart 51 located at one axial end above (as seen inFIG. 2 ) theconcave portion 50 of the substantially tube shaped member, and a lockingpart 52 located at the other axial end, below theconcave portion 50. The diameters of lockingparts hole 40. Accordingly, the firstelastic member 5 is inserted into the attachment throughhole 40 in such a way so as to respectively lock the upper end surface and the lower end surface of thepiping block 4 with lockingpart 51 and lockingpart 52. In this way, the firstelastic member 5 is attached to thepiping block 4. - The
collar 42 is longer than the firstelastic member 5. Each attachingmember 41 attaches thecollar 42 to thehousing 20. Accordingly, both thecollar 42 and the attachingmember 41 are integrally attached to thehousing 20. - Consequently, the
piping block 4 is attached to the housing 20 (at the actuator 2) via the firstelastic members 5. - As shown in
FIG. 2 , each of the piping throughholes 43 has afemale screw thread 43 a on the inner surface of their upper portions. An attachingpart 30 is attached to thefemale screw thread 43 a. As a result, eachmetallic pipe 3 is attached to thepiping block 4 via the attachingmember 30. - In addition, at the lower side of each of the piping through
holes 43, abuffer pipe 6 is arranged. Thebuffer pipe 6 is attached between the pipingblock 4 and thehousing 20. - The
buffer pipe 6 is manufactured by molding an elastic material (for example, an elastic material such as a rubber material and an elastically deformable resin material) into substantially the form of a tube. Thebuffer pipe 6 is attached to thehousing 20 by a retainingstructure 62, and thebuffer pipe 6 is attached to thepiping block 4 by a retainingstructure 63. Therefore, a gap between the pipingblock 4 and thehousing 20 is sealed. Thefluid paths 20 a that are disposed in thehousing 20 are connected to the piping throughholes 43 formed in thepiping block 4 via thebuffer pipes 6. - The retaining
structure 62 includes a lower attachingpart 60 that is provided at the lower axial end of thebuffer pipe 6 and ahousing support part 20 b that is provided in thehousing 20. Similarly, the retainingstructure 63 includes an upper attachingpart 61 that is provided at the upper axial end of thebuffer pipe 6 and ablock support part 44 that is provided in thepiping block 4. - At least a part of the attaching
part 60 and at least a part of the attachingpart 61 have tapered portions respectively broadening in circumference towards the lower and upper axial ends of thebuffer pipe 6 and creating tapered surfaces. On the other hand, each of thesupport parts support part 20 b and at least a part of thesupport part 44 have tapered portions respectively broadening in circumference towards the back of the grooves (in a direction towards the interior of the housing or piping block respectively) conforming to the forms of the attachingparts parts support parts parts support parts - In other words, the retaining structures have the attaching
parts buffer pipe 6 and thesupport parts actuator 2 and thepiping block 4, and both combinations of attaching parts and the support parts have corresponding tapered portions and tapered surfaces. Accordingly, the attachingparts support parts buffer pipe 6 in a removal direction by utilizing the cone angles of the tapered portions. - In addition, the
buffer pipe 6 is made of an elastic material as described above. Therefore, thebuffer pipe 6 may be expanded in a circumferential direction when the fluid pressure (hydraulic pressure) in thebuffer pipe 6 becomes high. When thebuffer pipe 6 expands, thebuffer pipe 6 may more tightly and more closely contact the engaging surfaces (tapered surfaces, etc.) of thesupport parts parts buffer pipe 6 in a removing direction. - In other words, before the fluid pressure within the
buffer pipe 6 expands the buffer pipe 6 (i.e., a period of relatively low pressure) or while the fluid pressure within thebuffer pipe 6 expands the buffer pipe 6 (i.e., a period of relatively high pressure), the retaining structures may prevent thebuffer pipe 6 from being inadvertently removed from theactuator 2 or thepiping block 4. In particular, when the fluid pressure expands thebuffer pipe 6, the retaining structure may more strongly prevent the inadvertent removal of thebuffer pipe 6 as compared to a lower fluid pressure situation before expansion. - Accordingly, the
actuator 2 and thepiping block 4 are able to stably retain thebuffer pipe 6 due to the retaining structure. Particularly, since thebuffer pipes 6 may be molded from an elastic material, thebuffer pipes 6 are likely to be expanded by the fluid pressure, thereby increasing the ability of the retaining structure to stably retain thebuffer pipes 6. - In addition, as shown in
FIG. 3 , thehousing 20 is provided with attaching structures 7 (only one attaching structure is shown inFIG. 3 ) to be attached to avehicle body 10, such as the frame or body structure of an automobile for example. The attachingstructures 7 may attach theactuator 2 to thevehicle body 10. Each attachingstructure 7 has abracket 70, a first attaching structure 7 a, and a second attachingstructure 7 b. - The first attaching structure 7 a has a second
elastic member 71 and attaches thehousing 20 to thebracket 70 via a secondelastic member 71. In addition, the second attachingstructure 7 b has an attachingmember 72 and attaches thebracket 70 to thevehicle body 10. Accordingly, theactuator 2 is attached to thevehicle body 10 via the secondelastic member 71. - The
brake unit 1 is configured as described above. Thus, as shown inFIG. 2 , theactuator 2 is coupled to themetallic pipes 3 via thepiping block 4 and thebuffer pipes 6. As a result, the oscillation of theactuator 2 is buffered by thebuffer pipes 6 and the oscillation is prevented from being directly transmitted to themetallic pipes 3. - In addition, the
actuator 2 is coupled to themetallic pipes 3 via thepiping block 4 and the firstelastic members 5. Consequently, the firstelastic members 5 buffer the oscillation of theactuator 2 and the oscillations are prevented from being directly transmitted to themetallic pipes 3. Thus, the subsequent occurrence of the unpleasant sensation felt by the passengers due to the noise generated by the oscillations of themetallic pipes 3 is also inhibited. - In addition, since the
metallic pipes 3 are inhibited from oscillating due to the isolation effects of thebuffer pipes 6 and the firstelastic members 5, the usable life of themetallic pipes 3 are extended. In addition, conventionally themetallic pipes 3 are attached to thevehicle body 10 via resin clips in order to absorb transmitted oscillations. However, according to the present embodiment, since the oscillations of themetallic pipes 3 are inhibited, it is possible to simplify the structure of the clips and/or decrease the total number of clips used. - With respect to
FIGS. 4 and 5 , the second embodiment will be described below. A brake unit 1A according to the second embodiment is approximately identical to the first embodiment with an exception that apiping block 8 and aplate part 80 shown inFIG. 4 are provided in place of thepiping block 4 shown inFIG. 1 . The primary differences between the first embodiment and the second embodiment will be described below. In the description and as shown inFIG. 4 andFIG. 5 , identical reference numerals are given to the elements that are similar or identical to the elements described in the first embodiment. - As shown in
FIG. 4 , the brake unit 1A has a plurality ofpiping blocks 8 equal to the number ofmetallic pipes 3. Eachmetallic pipe 3 is attached to arespective piping block 8. - The piping blocks 8 are welded to the
plate part 80 so as to be integrally attached to theplate part 80. Theplate part 80 is formed from a metallic plate and integrally includes anupper surface portion 80 a and aside surface portion 80 b. Theplate part 80 extends along a portion of the external surface of thehousing 20. Theupper surface portion 80 a extends along the upper surface of thehousing 20 and theside surface portion 80 b extends along a side surface of thehousing 20. - As shown in
FIG. 5 , a plurality of throughholes 80c are formed in theupper surface portion 80 a and theside surface portion 80 b. Tubular firstelastic members 53 andcollars 42 are inserted through each throughhole 80 c. Attachingmembers 41 are inserted at the center of eachcollar 42. Then, one end of each attachingmember 41 is attached to thehousing 20, so that eachcollar 42 and each firstelastic member 53 are attached to thehousing 20 via the attachingmembers 41. - The first
elastic member 53 may be made of an elastic material (such as a rubber material and an elastically deformable resin material). In addition, each firstelastic member 53 has aconcave portion 53 a located near the middle of its external circumferential surface. The firstelastic member 53 has a lockingpart 53 b located above theconcave portion 53 a and has a lockingpart 53 c located below theconcave portion 53 a. These lockingparts 53 b and lockingparts 53 c have diameters that are larger than a diameter of the throughhole 80 c. After the tubular firstelastic member 53 is inserted into the throughhole 80 c, the firstelastic member 53 is respectively locked (i.e. held in position) by the upper end surface and the lower end surface of theplate part 80 by the lockingparts plate part 80 is attached to thehousing 20 via the firstelastic member 53. - As shown in
FIG. 5 , each pipingblock 8 has a throughhole 83. The throughhole 83 has afemale screw thread 83a on the inner surface of its upper portion. The attachingpart 30 is attached to thefemale screw thread 83 a, and via the attachingmember 30, themetallic pipe 3 is attached to thepiping block 8. - In addition, at the lower side of the through
hole 83, eachbuffer pipe 6 is arranged and attached between the pipingblock 8 and thehousing 20. - Each
buffer pipe 6 is manufactured by molding an elastic material (such as a rubber material and an elastically deformable resin material) into the form of a tube as in the first embodiment. For this embodiment, thebuffer pipes 6 couple the throughholes 83 to thefluid paths 20 a of thehousing 20. Thebuffer pipes 6 are attached to thehousing 20 by a retainingstructure 62 and thebuffer pipes 6 are attached to thepiping block 8 by a retainingstructure 63. - As shown in
FIG. 4 , abracket 81 is secured to the plate part 80 (located in this embodiment along theside surface portion 80 b for example). - The
bracket 81 is formed from a metallic plate that extends from theside surface portion 80 b toward thevehicle body 10. As shown inFIG. 5 , thebracket 81 is provided with a through hole penetrating in a direction of thickness and an attaching member 82 (for example, a bolt) is inserted into the through hole. Thebracket 81 is then attached to thevehicle body 10 via the attachingmember 82. - The brake unit 1A is configured as described above. Therefore, as shown in
FIG. 5 , by attaching the piping blocks 8 to thevehicle body 10, theactuator 2 is attached to thevehicle body 10 via the piping blocks 8, theplate part 80, and the firstelastic members 53. - Accordingly, the
elastic members 53 buffer the oscillation of theactuator 2, so that the oscillations of theactuator 2 are inhibited from being transmitted to thevehicle body 10 by the firstelastic members 53. - In addition, the first
elastic members 53 may also inhibit the oscillation of theactuator 2 from being transmitted to themetallic pipes 3. Accordingly, the firstelastic members 53 may simultaneously play a roll in inhibiting the oscillation of theactuator 2 from being transmitted to thevehicle body 10 and in inhibiting the oscillation of theactuator 2 from being transmitted to themetallic pipes 3. Thus, according to the present embodiment, it is possible to effectively isolate the oscillations of theactuator 2. - The present invention is not limited to the first and second embodiments; the following embodiments may be established.
- (1) According to the first embodiment, as shown in
FIG. 1 the attachingmembers 41 connect theactuator 2 to thepiping block 4. Theactuator 2 is then attached to the vehicle body. However, there is an embodiment in which theactuator 2 is not connected to thepiping block 4 with attachingmembers 41, and both theactuator 2 and thepiping block 4 are separately (and possibly independently) attached to the vehicle body. Theactuator 2 is attached to the vehicle body via second elastic members, so that the second elastic members buffer the oscillation of theactuator 2. In this way, the oscillation is isolated so as to be prevented from being transmitted to the vehicle body. On the other hand, thepiping block 4 is coupled to theactuator 2 via thebuffer pipes 6 in the same manner as in the first embodiment. Therefore, thepiping block 4 does not suffer from the oscillations of theactuator 2. Thepiping block 4 does not transmit the oscillations of theactuator 2 even when thepiping block 4 is directly attached to the vehicle body without intervening second elastic members or the like. - (2) In addition, according to the first embodiment, the
actuator 2 and thepiping block 4 are integrated by attachment means and theactuator 2 is attached to the vehicle body. However there is an embodiment in which thepiping block 4 is attached to the vehicle body instead of theactuator 2. In this case, in the same manner as in the second embodiment, the firstelastic member 5 may inhibit the oscillation of theactuator 2 from being transmitted to the vehicle body and further, may inhibit the oscillation of theactuator 2 from being transmitted to themetallic pipes 3.
Claims (13)
1. A brake unit comprising:
an actuator for performing an anti-lock brake function,
a piping block,
at least one metallic pipe attached to the piping block, and
a buffer pipe corresponding to each metallic pipe,
wherein the buffer pipe is made of an elastic material, and
wherein the piping block is coupled to the actuator via the buffer pipe.
2. The brake unit according to claim 1 , further comprising:
at least one first elastic member,
wherein the piping block is attached to the actuator via the first elastic members.
3. The brake unit according to claim 2 ,
wherein the piping block is configured so as to be attached to a body of a vehicle, and
wherein the actuator is attached to the body of a vehicle via the piping block and the first elastic member.
4. The brake unit according to claim 1 , further comprising:
at least one second elastic member,
wherein the actuator and the piping block are configured so as to each be separately attached to a body of the vehicle, and
wherein at least the actuator is attached to the body of the vehicle via the second elastic member.
5. The brake unit according to claim 1 , further comprising:
a first retaining structure for each buffer pipe,
wherein the first retaining structure attaches the buffer pipe to the actuator.
6. The brake unit according to claim 5 , wherein the first retaining structure comprises:
a first attaching part that is disposed at a first end portion of the buffer pipe, and
a first support part that is disposed at the actuator;
wherein the first attaching part has a tapered portion including a tapered surface broadening in circumference towards the first end portion of the buffer pipe,
wherein the first support part is configured to engage the first attaching part when the first end portion of the buffer pipe is inserted into the actuator,
wherein the first support part is provided with a tapered portion including a tapered surface corresponding to the tapered portion of the first attaching part, and
wherein the engagement is established so as to prevent the first attaching part from being inadvertently removed from the first support part due at least in part to contact between the tapered portions along the tapered surfaces.
7. The brake unit according to claim 6 , further comprising:
a second retaining structure for each buffer pipe,
wherein the second retaining structure attaches the buffer pipe to the piping block.
8. The brake unit according to claim 7 , wherein the second retaining structure comprises:
a second attaching part that is disposed at a second end portion of the buffer pipe, and
a second support part that is disposed at the piping block;
wherein the second attaching part has a tapered portion including a tapered surface broadening in circumference towards the second end portion of the buffer pipe,
wherein the second support part is configured to engage the second attaching part when the second end portion of the buffer pipe is inserted into the piping block,
wherein the second support part is provided with a tapered portion including a tapered surface corresponding to the tapered portion of the second attaching part, and
wherein the engagement is established so as to prevent the second attaching part from being inadvertently removed from the second support part due at least in part to contact between the tapered portions along the tapered surfaces.
9. The brake unit according to claim 1 , further comprising:
a second retaining structure for each buffer pipe,
wherein the second retaining structure attaches the buffer pipe to the piping block.
10. The brake unit according to claim 9 , wherein the second retaining structure comprises:
a second attaching part that is disposed at a second end portion of the buffer pipe, and
a second support part that is disposed at the piping block;
wherein the second attaching part has a tapered portion including a tapered surface broadening in circumference towards the second end portion of the buffer pipe,
wherein the second support part is configured to engage the second attaching part when the second end portion of the buffer pipe is inserted into the piping block,
wherein the second support part is provided with a tapered portion including a tapered surface corresponding to the tapered portion of the second attaching part, and
wherein the engagement is established so as to prevent the second attaching part from being inadvertently removed from the second support part due at least in part to contact between the tapered portions along the tapered surfaces.
11. The brake unit according to claim 1 , comprising two or more metallic pipes;
wherein each the metallic pipe is coupled to the actuator via the corresponding buffer pipe.
12. The brake unit according to claim 11 ,
wherein the piping block is formed as a single member to be connected to a plurality of metallic piping.
13. The brake unit according to claim 11 , further comprising:
a plate part;
wherein the piping block comprises two or more block members;
wherein each block member is connected to corresponding the metallic pipe; and
wherein the plate part connects the block members to each other.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-323181 | 2003-09-16 | ||
JP2003323181A JP2005088691A (en) | 2003-09-16 | 2003-09-16 | Brake unit |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050057089A1 true US20050057089A1 (en) | 2005-03-17 |
Family
ID=34270023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/928,144 Abandoned US20050057089A1 (en) | 2003-09-16 | 2004-08-30 | Brake units |
Country Status (3)
Country | Link |
---|---|
US (1) | US20050057089A1 (en) |
JP (1) | JP2005088691A (en) |
DE (1) | DE102004044155B4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150203085A1 (en) * | 2012-09-21 | 2015-07-23 | Hitachi Automotive Systems, Ltd. | Brake unit |
CN109131292A (en) * | 2018-08-20 | 2019-01-04 | 江西中汽瑞华新能源科技有限公司 | A kind of automobile integrated control valve fixed mechanism |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5126006B2 (en) * | 2008-11-13 | 2013-01-23 | 株式会社アドヴィックス | Brake hydraulic pressure control device |
JP6334255B2 (en) * | 2014-05-15 | 2018-05-30 | 三菱電機株式会社 | Fluid control device |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2520757A (en) * | 1946-06-15 | 1950-08-29 | Wilcox Gay Corp | Phonograph-shock and vibration absorbing support |
US3384115A (en) * | 1964-09-29 | 1968-05-21 | Zd Y Prumyslove Automatisace | Pneumatic logic system on the block principle |
US5277554A (en) * | 1992-11-13 | 1994-01-11 | Copeland Corporation | Tandem compressor mounting system |
US5310029A (en) * | 1992-10-19 | 1994-05-10 | Bundy Corporation | Brake tube coupling |
US6347845B1 (en) * | 1997-12-16 | 2002-02-19 | Robert Bosch Gmbh | Brake system for vehicles |
US6386650B2 (en) * | 2000-04-12 | 2002-05-14 | Suzuki Motor Corporation | Arrangement construction of ABS system |
US20030155809A1 (en) * | 2000-07-27 | 2003-08-21 | Michael Schlitzkus | Device for the elastic mounting of a hydraulic unit in a motor vehicle braking system on a vehicle |
US20040040809A1 (en) * | 2000-06-02 | 2004-03-04 | Bengt-Goran Gustavsson | Method for damping vibrations and a method for mounting the device |
US20040207255A1 (en) * | 2001-08-13 | 2004-10-21 | Holger Meyer | Electrohydraulic pressure regulating device |
US20040232306A1 (en) * | 2003-05-06 | 2004-11-25 | Lockheed Martin | Vibration isolation system for dagger mounted equipment |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4324435C2 (en) * | 1992-10-17 | 2000-09-21 | Continental Teves Ag & Co Ohg | Acoustically damped connection of a pipeline |
DE19506630A1 (en) * | 1995-02-25 | 1996-08-29 | Teves Gmbh Alfred | Hydraulic unit esp. for vehicle brake pressure regulator |
JPH10250549A (en) * | 1997-03-07 | 1998-09-22 | Daihatsu Motor Co Ltd | Actuator installing structure of antilock brake system |
-
2003
- 2003-09-16 JP JP2003323181A patent/JP2005088691A/en active Pending
-
2004
- 2004-08-30 US US10/928,144 patent/US20050057089A1/en not_active Abandoned
- 2004-09-13 DE DE102004044155A patent/DE102004044155B4/en not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2520757A (en) * | 1946-06-15 | 1950-08-29 | Wilcox Gay Corp | Phonograph-shock and vibration absorbing support |
US3384115A (en) * | 1964-09-29 | 1968-05-21 | Zd Y Prumyslove Automatisace | Pneumatic logic system on the block principle |
US5310029A (en) * | 1992-10-19 | 1994-05-10 | Bundy Corporation | Brake tube coupling |
US5277554A (en) * | 1992-11-13 | 1994-01-11 | Copeland Corporation | Tandem compressor mounting system |
US6347845B1 (en) * | 1997-12-16 | 2002-02-19 | Robert Bosch Gmbh | Brake system for vehicles |
US6386650B2 (en) * | 2000-04-12 | 2002-05-14 | Suzuki Motor Corporation | Arrangement construction of ABS system |
US20040040809A1 (en) * | 2000-06-02 | 2004-03-04 | Bengt-Goran Gustavsson | Method for damping vibrations and a method for mounting the device |
US20030155809A1 (en) * | 2000-07-27 | 2003-08-21 | Michael Schlitzkus | Device for the elastic mounting of a hydraulic unit in a motor vehicle braking system on a vehicle |
US20040207255A1 (en) * | 2001-08-13 | 2004-10-21 | Holger Meyer | Electrohydraulic pressure regulating device |
US20040232306A1 (en) * | 2003-05-06 | 2004-11-25 | Lockheed Martin | Vibration isolation system for dagger mounted equipment |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150203085A1 (en) * | 2012-09-21 | 2015-07-23 | Hitachi Automotive Systems, Ltd. | Brake unit |
US9764723B2 (en) * | 2012-09-21 | 2017-09-19 | Hitachi Automotive Systems, Ltd. | Brake unit |
CN109131292A (en) * | 2018-08-20 | 2019-01-04 | 江西中汽瑞华新能源科技有限公司 | A kind of automobile integrated control valve fixed mechanism |
Also Published As
Publication number | Publication date |
---|---|
DE102004044155B4 (en) | 2007-03-08 |
JP2005088691A (en) | 2005-04-07 |
DE102004044155A1 (en) | 2005-04-14 |
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AS | Assignment |
Owner name: ADVICS CO., LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KONDO, MASUHIRO;REEL/FRAME:016197/0281 Effective date: 20040823 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |